The purely leptonic and semileptonic decays of D^*_s meson

2025/11/22 by Wang, Xiao-Lin, Sun, Rui, Wang, Li-Ting
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · doi:10.48550/arxiv.2511.18033

openalex publication_date 2025/11/22 · openalex created_date 2025/11/27 · openalex updated_date 2026/07/28

Abstract

With the potential prospects of the D^*_s at high-luminosity heavy-flavor experiments in the future, we investigated the CKM-favored and tree-dominated leptonic D^*_s→ℓν_ℓ and semileptonic D^*_s→ Mℓν_ℓ (M=ϕ, η^(′) and ℓ=e, μ) weak decays in the Standard Model (SM). The theoretical predictions and some discussions for the observable quantities including the total width of D^*_s mesons, the branching fractions of leptonic D^*_s→ℓν_ℓ and semileptonic D^*_s→ Mℓν_ℓ weak decays, the lepton spin asymmetry and forward-backward asymmetry are presented. Numerically, the weak decays of D^*_s→ℓν_ℓ and D^*_s → Mℓν_ℓ have relatively large branching fractions of the order O(10^-5) and O(10^-7) respectively, which are expected to be observed in future experiments.

Citations

• The Electromagnetic Form Factors of Pseudoscalar Mesons within the Light-Front Quark Model

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